Toyota Tacoma 2015-2018 Service Manual: Air Outlet Damper Control Servo Motor Circuit (B1443/43)

Toyota Tacoma 2015-2018 Service Manual / Air Conditioning / Air Conditioning System(for Automatic Air Conditioning System) / Air Outlet Damper Control Servo Motor Circuit (B1443/43)

DESCRIPTION

This No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) is controlled by the air conditioning amplifier assembly and moves the mode damper to the desired position.

DTC No.	DTC Detection Condition	Trouble Area
B1443/43	Mode damper position sensor value does not change even if air conditioning amplifier assembly operates mode damper servo motor.	No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) Harness or connector Air conditioning amplifier assembly

WIRING DIAGRAM

PROCEDURE

1.	READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Operate the mode switch.

(e) Enter the following menus: Body Electrical / Air Conditioner / Data List.

(f) Check the value(s) by referring to the table below.

Air Conditioner

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Air Outlet Damper Position	Mode damper servo motor actual position / Min.: -14.0% Max.: 113.5%	FACE: 0.0% DEF: 100.0%	-
Air Outlet Damper Target	Mode damper servo motor target position / Min.: -14.0% Max.: 113.5%	FACE: 0.0% DEF: 100.0%	-

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Air Outlet Damper Position

Mode damper servo motor actual position /

Min.: -14.0%

Max.: 113.5%

FACE: 0.0%

DEF: 100.0%

Air Outlet Damper Target

Mode damper servo motor target position /

Min.: -14.0%

Max.: 113.5%

FACE: 0.0%

DEF: 100.0%

OK:

The display is as specified in the Normal Condition column.

Result	Proceed to
NG	A
OK (When troubleshooting according to Problem Symptoms Table)	B
OK (When troubleshooting according to the DTC)	C

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

2.	INSPECT NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (FOR MODE SWITCHING)

(a) Remove the No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) (See page (b) Inspect the No. 1 air conditioning radiator damper servo sub-assembly (for ).

(b) Inspect the No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) (See page ).

REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (FOR MODE SWITCHING)

3.	CHECK HARNESS AND CONNECTOR (NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

(a) Disconnect the D32 No. 1 air conditioning radiator damper servo sub-assembly (for mode switching) connector.

(b) Disconnect the A35 air conditioning amplifier assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
D32-6 (FACE) - A35-27 (AOF)	Always	Below 1 Ω
D32-7 (DEF) - A35-28 (AOD)	Always	Below 1 Ω
D32-6 (FACE) or A35-27 (AOF)	Always	10 kΩ or higher
D32-7 (DEF) or A35-28 (AOD)	Always	10 kΩ or higher

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Lost Communication with ECM (U0100,U0142,U0155)

DESCRIPTION DTC No. DTC Detecting Condition Trouble Area U0100 No communication with ECM CAN communication system ...

Air Outlet Damper Position Sensor Circuit (B1433/33)

DESCRIPTION This sensor detects the position of the mode damper and sends the appropriate signals to the air conditioning amplifier assembly. The position sensor is built into the No. 1 air condi ...

Other materials:

Short in Side Squib RH Circuit (B1820/55-B1823/55)
DESCRIPTION The side squib RH circuit consists of the airbag sensor assembly and the front seat airbag assembly RH. The circuit signals the SRS to deploy when airbag deployment conditions are met. These DTCs are set when a malfunction is detected in the side squib RH circuit. DTC No ...

Inspection
INSPECTION PROCEDURE 1. INSPECT FUEL INJECTOR ASSEMBLY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 11.6 ...

Entire Combination Meter does not Operate
DESCRIPTION This circuit is the power source circuit for the meter. This circuit provides two types of power sources, one is a constant power source mainly used as a backup power source, and the other is an IG power source mainly used for signal transmission. The constant power source is main ...